A) thick rod expands more
B) thin rod expands more
C) both rods expand equally
D) thick rods expand more tor large quantity of heat and thin rods expand more for small quantity of heal
Correct Answer: B
Solution :
From the relation Rate of loss of heat \[=ms\times \frac{d\theta }{dt}\] = mass \[\times \] specific heat \[\times \] rate of cooling So, rate of cooling \[\propto \frac{1}{mass}\] Therefore, as the mass of thin rod will be less. Hence, thin rod will expand more.
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